Re: 273 Swapping Sides on Pistons
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Re: 273 Swapping Sides on Pistons




If you find the article, Dodger, post it on the FABO site, as they wont believe me when I tell them about this procedure. They all think you just switch the piston/rod assembly bank-for-bank.

Darwin/BC/Canada
'65 Cdn. Valiant Custom 100 'vert
--225/A833...in a million pieces
'67 Dart GT 'vert
--273/904...in "enjoying" condition



----- Original Message ----- From: <Dodger7998@xxxxxxx>
To: <1962to1965mopars@xxxxxxxxxx>
Sent: Thursday, January 28, 2010 2:29 PM
Subject: Re: 273 Swapping Sides on Pistons




Ok hope I am not opening a can of dead worms here, but will tell what I was
told many years ago.......
   to reduce rotating friction, turn your pistons 180  degrees when
installing them,,,,,,,,,,,,,supposedly the story goes like this,,,,,,,,,the pin in the piston is not dead center, and is designed to create a very minimal amount of bind when at top dead center of the stroke,,,,,this is done so as
to eliminate piston rattle when the piston is in the process of  changing
direction at end of stroke.......... the article that I read  on this also
said that the engine would be noisy compared to the stock build, but would not
cause harm,,,,,,,if someone is interested I will try to find the  article
and post it,,,,,,,,,,,,,,, dodger


In a message dated 1/28/2010 12:30:03 P.M. Central Standard Time,
stevec@xxxxxxxxxxxxxxxxxxxx writes:


Tom,
We used to do it on big blocks all the  time (flat tops), but have
never tried it on a small block.  We were  always careful not to rev it to
much when the motor was cold but it seemed that the motors made more power.

SC

-----Original  Message-----
From: Tom Watters [mailto:tomwatters@xxxxxxxxxxx]
Sent:  Thursday, January 28, 2010 12:58 AM
To:  1962to1965mopars@xxxxxxxxxx
Subject: 273 Swapping Sides on  Pistons


Over on the A-Bodies only Board, they are talking about  swapping sides on
the 10.5:1 pistons on 273's. I had some confusion, but it seems to make a
little sense.  Dome offset isnt centered, so  parts of the piston may come
closer to the head in places and more gap in  others.

http://www.forabodiesonly.com/mopar/showthread.php?t=84332 (3/4  down the
page is where part of it starts posted by Russ (Double  M).

Has anybody on the list done this in the past and had any real  success?
What are the downsides to  this?

Thoughts?


Thanks
--Tom


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--
[Non-text portions of this message have been removed]


----
Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks!

1962 to 1965 Mopar Clubhouse Discussion Guidelines:
http://www.1962to1965mopar.ornocar.org/mletiq.html and http://www.1962to1965mopar.ornocar.com/general_disclaimer.html.




----
Please address private mail -- mail of interest to only one person -- directly to that person.  I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic.  Thanks!

1962 to 1965 Mopar Clubhouse Discussion Guidelines:
http://www.1962to1965mopar.ornocar.org/mletiq.html and http://www.1962to1965mopar.ornocar.com/general_disclaimer.html.












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